Lawn mower



Nov. l2,V 1929. E.' A. EUSTICE 4 1,735,567

' l LAWN MowER Filed lApril 15, 1927 2 Sheets-Sheet l kk Q l l a l am ll 1 ON s, N?

O l' [IH .1 u: O n l O I l o f N l o O O N o n N l\ '/1/ N v H .N Mn I I gra/vento@ u N n I :n EAEUSZCE,

aufm mug Nov. l2, 1929.

E. A. EUsTlcE 1,735,567

LAWN MowER Filed April 15, 1927 2 sheets-snaai 2 f9- IVI/vento@ 2O atto?, m

YPatented Non. 12, 1929 l LAWN MQWER App/liceitnled April '15,

This invention reletes5 tno imp rcvernents; in lawn mowers, having especial 'refeijence to with respectithereelbladestuittetti-lien" bcclily V While 5 1S -thec'fustmry roller th stantially th medie (ifitsl Width'n extended;

30 It is important that lthe'ends of'the ,cutterybetween the frame members l.

proved manner the cutter-blade 6 previously referred to and best shown in Figure 8.

The rear edge of the cutter-bar has a series of'forked extensions 18, Figures 3 and ll, land lying in said extensions is a rod 19 extending Said rod, preferably rounded, has a threaded reduced stem`20'at each end which extends through the adjacent frame member and receives a nut 21. Each said stem'is eccentricY tothe `periphery of the rod, Figure 7, andy the rod is thus constituted a cam. Preferably a squared.V yportion 22 is formed on'V the rod at each end inward from the said stem and abutsupon the adjacent frame member,.and the rod thus becomes a spacer for said framefmembers 1.

2 Each squared portion 22 receives a leverarm 23 by which the rod may beiroclred. Said arm extends upwardly, FiguresV g2, and 3, andv to its upper end is attached one end of a rod 24; threaded at its other end-andfextending through a fixed arm 25 of the frame g1. On the rod'24 is a wing nut v26, for example, at each side of said arm '25 adapted to shi-ftsaid rod '24 lengthwise in Veither direction;,transmitting vmotionto the lever-arm 23 vand,- the'rod v19g The two' wing-nuts' or their equivalents serve to impart an exact adjustment andjlikewise provide for fixing'the rod 19 pesitively in agdesired position.

bar blade 6`be adj usted'separately for the best results' andthis may be done by turning the to the path of the reel blades 4;

members9 within the sockets 8 of the boss 7.

By loosening the nuts`12of the bolts the rmembers 9 may be turned by the application ofha tool to the flangesle, the notches 1 5,l being convenient for the reception'lof a tool to vbe tappedby ahammer, for example, tofslowly and accurately raise or lower-the bladel;

Itis clear that sincethe gudgeons are mounted in the 'members 9 eccentric tofthe mounting vof. those members the cutter bar will be raised and lowered and its bladecan be adjusted to "an exact degree with. respect AfterV tightening the bolts 11, follhtving this Vadj ustment,.'the cutter-bar' will 'remain at a fixed height but the gudgeonsA are free to rock within the sockets 10. Since thecutter- '/.bar is thus free to rock onits gudg'eons it may be very easily adjusted by rocking' the t Vcam rod y1,9;through the lever-arm 23,"'and associated parts.

Preferably a ksheet metal shield is provided to'overlie the,cutter-bar 16 and enclose sbl ' pivotpin l28 as in Figure 2, or the rod may be theextensions 1'8'the`reof for excluding from the latterv grass clippings and otherlitter.

The rod 24 having control `of thelever-arm 23 may be swiveled in the latter means of a lixed tosaid leverand play upz'and down in a Yslot `29vin the arm 25', either method or both A,being open forl use. f Itis to be observed'thatsince the eccentriter-bar for imparting: independent? orbital Y cally mounted rod 19 is shouldered against the frame members 1 the tightening of the nuts .21 thereon will secure the said frame members relatively. This invaddition to and in conjunction with the usual and well known spacing bar or rod 12, Figure 1', extending between said members serves to preserve a very Vrigid structure throughout so that n racking of the mower frame is permitted. ,This feature,constitutesianhiniportant part of the invention.

. 'Ih'e arrangement illustrated'and described Vis a preferred construction though it is to be understood'that-'changes may be made that will-be considered as lying Within the scope of the appended claims. I

aside of its axis, said eccentric engaging? the 1. In a lawn mower, the combination-With i same at both ends for adjustingitsfeutting edge with respect tosaid reels" l t In a lawn mower, the combination-with the"`side frame members thereof, yits reeli, a cutter-bar, and means mounted fon each frame member for carryingoneend of-said-cutter bar, and for imparting an orbital movement -to the latter, and an eccentricallywniounted member carried by the frame lmembers directly engaging the cutter-barat both'its ends for adjust-ing thecutting edge'of saidbar with respect to thersaid reel. 5 9 i' 4. In`a lawn mower,'thecombination with the side framemembers thereof, its reel, acutter-bar, and means mounted 'o n each'fframe member forcarrying'one end of said'cutterv bar, each for imparting an orbital-'movement 'to the latter, an ec'eentrical-ly mounted mem' berc'arried by the frame ymembers directly engaging the cutter-bar at bothitsends for Vadjusting the cuttingjedge of said'bar :with

respectto the'said reel," an arm fixed "with `re-x spect to the said eccentrically InOli-'ntedmeinber, a threaded rodattaehed tothe arm and extending through a part eflthe mowerframe, and aA nut on the krod lat eachfside tf Ithe frame engaging the same'adapted for adjusting said rod and for fixiigthe same with respect to said frame.:

5. Inra lawn mower,fthecombinationwith the side frame membersthereoits reel, a cutter-bar including al` forked rear edgeand having taperedextensions'at itsV ends, a meni-J y ber on each frame member having a tapered vspect to socket to receive said extremities, each said member being mounted whereby 1n a rotative movement thereof the cutter-bar extremityV carried by it will be moved in an orbital path, and an eccentric rod rotatably mounted in the frame members engaging between the forked edge of the cutter-barefor tilting the latter in the socketed members. Y

6. A lawn mower including in combination with the side frame members thereof, a vcutter-bar having tapered extremities, a member at each end of the cutter4bar having asocket to receive an extremity, each frame member having av socket to receive one of said socketed members,the socket of each of the latter being eccentric to the socket of the frame, and means to x said socketed members with rethe said frame members.

7. A lawn mower including in combination with the side frame members thereof, a cutlter-bar therebetween adapted to tilt on an axis lying between its edges, one of said edges being forked, a rod eccentrically mounted on the frame members and engaging in the fork of the cutter-bar, and means to rock the rod and fix it with respect to said frame mema and mechanism to tilt bers. l y

8. In a lawn mower the combination with the mower frame and a cutter bar, of members mounted on said frame in which the cutter bar is pivotally carried at both its ends, said members being arranged to impart an orbital movement'to both said ends independently,

the cutter bar with re- Y spect to the members and for fixing it in a def sired position.

In testimony EDWARD A. EUSTICE.

whereof I affix my signature. Y 

